Irregular horn

Lee T · 26th March 2024, 14:56

A couple of weeks ago car locked on driveway, the horn suddenly sounds continuously. I unlocked the car but the horn continued, so disconnected the battery and did a Norwegian reset and left it for 30mns. Reconnected the neg lead and no horn Great I think and before I can tighten the nut, off it goes again only this time it's a 5 second beep a pause then continuous.
I have since checked fuse and fuse boxes, all clean dry.
Changed horn for a PPD twin set and replaced loom from horn to multi plug. Changed the bonnet switch, although original is working. Tried changing the horn buttons with a known working pair to no avail. If I pull the fuse from the cabin fuse box then replace it, the horn will sound either immediately or within 2 mns. From info here I believe that the horn relay is a black one on the back of the cabin fuse box and is not a simple pull out like usual. (was that a decision by the same person who chose the clutch master location) Does anyone know if or how this relay can be removed or have an early Diesel cabin fuse box for sale.

Lee.

26th March 2024, 14:56	#1
Lee T Gets stuck in MG ZT Join Date: Jul 2014 Location: Liverpool Posts: 867 Thanks: 180 Thanked 248 Times in 189 Posts	Irregular horn A couple of weeks ago car locked on driveway, the horn suddenly sounds continuously. I unlocked the car but the horn continued, so disconnected the battery and did a Norwegian reset and left it for 30mns. Reconnected the neg lead and no horn Great I think and before I can tighten the nut, off it goes again only this time it's a 5 second beep a pause then continuous. I have since checked fuse and fuse boxes, all clean dry. Changed horn for a PPD twin set and replaced loom from horn to multi plug. Changed the bonnet switch, although original is working. Tried changing the horn buttons with a known working pair to no avail. If I pull the fuse from the cabin fuse box then replace it, the horn will sound either immediately or within 2 mns. From info here I believe that the horn relay is a black one on the back of the cabin fuse box and is not a simple pull out like usual. (was that a decision by the same person who chose the clutch master location) Does anyone know if or how this relay can be removed or have an early Diesel cabin fuse box for sale. Lee. __________________ [SIGPIC][/SIGPIC]